Senior Infrastructure Engineer - London

About H Company H Company pursues advances in superintelligence with a focus on agentic AI. The team works to automate complex, multi-step tasks that typically require human involvement, aiming to expand what people can achieve. H Company values curiosity, responsibility, and a commitment to safety in AI. The culture emphasizes openness, ongoing learning, and collaboration, with each person’s input recognized and appreciated. Infrastructure Team Overview The Infrastructure team provides researchers and engineers with the resources they need to do their best work. This group maintains the core infrastructure behind H’s public services, building systems that are reliable, scalable, and ready for growth. Team members shape everything from foundational models to agent systems and public-facing services.

About FreshaFresha is the premier marketplace platform in the beauty and wellness sector, trusted by millions of consumers and businesses around the globe. With over 130,000 businesses and 450,000 stylists using our platform, we have successfully processed over 1 billion appointments to date.Headquartered in London, United Kingdom, Fresha operates from 15 offices across North America, EMEA, and APAC.Our platform enables consumers to discover, book, and pay for beauty and wellness appointments with local businesses. In turn, beauty and wellness professionals utilize our comprehensive platform to manage their operations seamlessly through innovative business software and financial technology solutions.Fresha’s ecosystem equips merchants with all essential tools for efficient business management, including appointment bookings, point-of-sale systems, customer record management, marketing automation, loyalty programs, beauty product inventory, and team management.Our consumer marketplace enhances revenue potential for partner businesses by leveraging online bookings and automated marketing through mobile applications and advanced integrations with leading tech brands like Instagram, Facebook, and Google.Role OverviewAs Fresha embarks on its next phase of global expansion, the Platform team plays a crucial role in ensuring that this growth is swift, secure, and sustainable.In your capacity as a Senior Platform Engineer, you will hold complete responsibility for the design, deployment, and operation of our platform and services. Your primary objective is to eliminate obstacles for engineers, minimize operational risks, and ensure that the platform effectively scales in alignment with the business's growth.Your mission is to provide engineers with the appropriate tools, methodologies, and infrastructure necessary for them to deliver their work efficiently, safely, and confidently.We place a strong emphasis on the impact of our work on customers, even when the tasks are internal; our platform improvements are aimed at enhancing the overall customer experience.To cultivate a collaborative work environment that thrives on in-person interactions and teamwork, all employees at Fresha are required to work from our dog-friendly office four days a week, with the flexibility to work remotely every Wednesday. The office is located at: The Bower, The Tower, 207 Old St, London EC1V 9NR.

Join us at Solve Intelligence, where we are pioneering AI-driven infrastructure for the global Intellectual Property sector. We are seeking a talented Infrastructure Engineer to develop the secure and scalable systems that drive our innovative solutions. Your Role: As an Infrastructure Engineer, you will collaborate with a highly skilled engineering team in London. Your focus will go beyond server management; you will architect multi-region, high-performance systems capable of processing complex AI tasks.Key Responsibilities:Cloud Architecture: Design, implement, and optimize our AWS infrastructure using Terraform for maximum reliability, cost-effectiveness, and scalability.Global Deployment: Create infrastructure patterns to support multi-region deployments and isolated environments tailored for enterprise clients.Developer Efficiency: Build and maintain CI/CD pipelines (using GitHub Actions and Docker) that enable our team to deliver features swiftly and securely.Monitoring & Reliability: Implement observability practices using OpenTelemetry and Datadog to proactively identify and resolve issues before they affect users.AI Performance Optimization: Fine-tune autoscaling and network routing to efficiently handle resource-heavy LLM workloads with minimal latency. About Solve Intelligence: We are a rapidly growing startup reinventing the IP industry.Growth: Achieving 20-30% month-over-month revenue increases; currently serving over 200 global IP teams, including DLA Piper and various tech companies.Impact: Our users experience efficiency improvements of 50-90% through our AI solutions.Funding: Recently highlighted in Sifted, following our $40M Series B funding round, bringing our total investment to $55M from prestigious investors like Y Combinator, 20VC, and others. Your Team: Work alongside a founding group of AI PhDs and top-tier systems engineers.

Join Perplexity, a pioneering company based in London, as we transform the way users search and engage with the internet. We are seeking seasoned Infrastructure Engineers to become integral members of our dynamic team. In this role, you will lead the design, implementation, and scaling of innovative tools, systems, and platforms that empower web, mobile, and browser engineers to develop cutting-edge products. Your contributions will be vital in enabling our product, AI, and development teams to innovate swiftly while ensuring utmost reliability, security, and performance at scale.Our Tech StackPython | Go | TypeScript | PostgreSQL | DynamoDB | Redis | FastAPI | React | Bazel | GitHub | AWSTeams HiringSenior/Staff PlatformThe Platform team is fundamental to ensuring product reliability, scalability, and performance at Perplexity. This elite team is responsible for developing and maintaining the critical infrastructure—from backend systems such as authentication, real-time data flows, and service orchestration to frontend frameworks that guarantee fast, reliable, and secure user experiences. By upholding stringent standards for code quality, uptime, and developer productivity, the Platform team enables all of Perplexity to innovate rapidly on a solid, well-designed foundation.Senior/Staff DevXThe Developer Experience (DevX) team is dedicated to empowering engineers at Perplexity to build, ship, and iterate faster than ever before. They manage internal platforms for source control, build, test, and deployment, effectively removing bottlenecks from each phase of product development. This team designs seamless onboarding, ultra-fast CI/CD pipelines, and developer tools that enhance creativity and safety at scale. Through collaborative efforts and significant autonomy, the DevX team amplifies the contributions of every engineer, facilitating rapid, dependable innovation across the organization.Senior/Staff Cloud InfraThe Cloud Infrastructure team architects and manages the essential cloud infrastructure that powers Perplexity’s global platform. This team designs and scales computing, storage, and networking systems to support high-throughput, low-latency workloads, balancing proactive project initiatives with operational support. Collaboration with product, AI research, security, and other teams ensures that our services remain consistently available, reliable, and responsive to user demands.

Join MUBI as a Senior Infrastructure EngineerMUBI is a renowned global streaming service, production company, and film distributor committed to celebrating exceptional cinema. Our mission is to create, curate, acquire, and promote visionary films that reach audiences worldwide. With passionate teams collaborating across cities like London, New York, Istanbul, Paris, Berlin, and Mexico, we strive to make great cinema accessible to everyone.We invite you to be part of our vibrant global team and contribute to our mission.Role OverviewThis is not your conventional DevOps or ML infrastructure role. As a Senior Infrastructure Engineer, you will build and deliver innovative software solutions, including internal tools, services, and automated processes that address real infrastructure challenges. Your work will encompass automated incident response, intelligent observability, and support ticket management. You will apply agentic patterns to navigate the complexities of operational environments instead of training models or managing GPUs.We are seeking a senior candidate who excels in system architecture, mentors fellow engineers, and leads by example. Your background should include hands-on experience in developing infrastructure applications and tools, demonstrating a willingness to explore new systems, take ownership of challenges, and drive solutions to fruition.Our infrastructure team adheres to SRE principles, focusing on building reliable, automated systems and minimizing operational toil. You will be responsible for developing and maintaining the platforms that empower our engineering teams to deploy, scale, and monitor their services. Your responsibilities will span from managing bare-metal CDN servers to Kubernetes clusters and AI-enhanced workflows.Join us in a small team with high autonomy and direct impact, working in a hybrid model (2-3 days a week in London), with remote work options available for exceptional candidates outside the city.

Role Overview Checkatrade is seeking an IT Systems and Infrastructure Engineer (Fixed-Term Contract) to join the team in Moorgate, London. This role focuses on strengthening and maintaining the company’s IT backbone across hybrid cloud environments. The engineer will manage day-to-day operations, automate processes, enhance security, and support the scalability of Checkatrade’s infrastructure. Main Responsibilities Build and maintain secure, reliable infrastructure to support business operations and internal teams. Spot areas for improvement in infrastructure management and implement more effective solutions. Work closely with security, platform, and software engineering teams to deliver stable and dependable tools and systems. Ensure systems remain stable, secure, and easy to use for teams across the business. What We’re Looking For Solid experience managing IT infrastructure in Microsoft environments, including Windows Server, Active Directory, and Microsoft 365. Hands-on experience with identity and access management, especially using Okta for SSO, MFA, and user lifecycle management. Comfort working with cloud platforms like Azure, and familiarity with AWS or Google Cloud. Experience supporting modern workplace tools such as Google Workspace and managing endpoints across macOS, Windows, and ChromeOS. Good understanding of networking and security basics, including DNS, VPNs, and firewalls. Ability to automate tasks or workflows using scripting languages (PowerShell, Python, Bash) or tools like Okta Workflows or Zapier. Strong problem-solving skills and the ability to explain technical concepts clearly to different audiences. Location This position is based at Checkatrade’s Moorgate office in London.

Join Wintermute as an Infrastructure Support EngineerAt Wintermute, a leading technology unicorn and one of the largest algorithmic trading firms specializing in digital assets, we are on the lookout for passionate individuals to join our infrastructure team. We provide liquidity across various cryptocurrency exchanges, offer a range of OTC trading solutions, and support esteemed blockchain projects and traditional financial institutions transitioning into the crypto realm. Additionally, our Wintermute Ventures arm invests in promising early-stage DeFi projects.Founded in 2017, Wintermute has successfully navigated through various industry cycles. Our culture merges the rigorous technology standards of high-frequency trading firms with the innovative spirit of technology startups. We are committed to harnessing the potential of blockchain technology and taking a leadership role in building a compliant and innovative digital asset market.Role OverviewAs an Infrastructure Support Engineer, you will play a crucial role within our systems administration group. This primarily technical support position focuses on our mixed environment, integrating both physical and virtual computing resources. Your responsibilities will include providing technical support for our automated desktop setup.We seek responsible and enthusiastic candidates eager to launch or advance their careers in infrastructure. This position offers the chance to collaborate with and learn from our senior technologists, enhancing your automation skills, particularly in Python. As our business evolves, your role will be vital in maintaining our networks and computing environments.Wintermute is dedicated to fostering the growth of your automation capabilities.

Role Overview Quantexa is hiring a Senior DevOps Engineer in London. This role focuses on building and improving cloud infrastructure, as well as strengthening continuous integration and delivery systems. Collaboration with engineers across teams is central to the work, with a strong emphasis on refining deployment pipelines for stability and growth.

Join PhysicsX as a Senior Machine Learning Infrastructure Engineer and play a pivotal role in shaping our machine learning capabilities. In this position, you will architect, develop, and scale our infrastructure to support advanced machine learning models and applications. Collaborate with cross-functional teams to ensure seamless integration and high performance of our ML systems.

Role overview Turnertownsend is hiring an Infrastructure Estimator based in London. This role supports major infrastructure projects by producing accurate cost estimates that guide project planning and decision-making. What you will do Collaborate with project managers and engineering teams to review project specifications and requirements Create detailed cost estimates for various infrastructure projects Analyze data and prepare thorough reports to assist with project planning and feasibility assessments Who we’re looking for Success in this position comes from strong attention to detail and a collaborative approach within project teams. An interest in infrastructure and a commitment to delivering quality work are important qualities for this role.

Join physicsx as a Senior Software Engineer specializing in Site Reliability Engineering (SRE). In this pivotal role, you will be responsible for enhancing our core infrastructure, ensuring reliability, scalability, and performance of our software systems. You will work with a talented team to design, implement, and maintain robust solutions that meet the needs of our users.As a senior engineer, you will also mentor junior team members, contribute to architectural discussions, and drive best practices in software development and operations.

Turner Townsend is seeking a Senior Project Controls Engineer to join its London team, focusing on infrastructure projects. This position plays a key role in supporting project delivery and ensuring effective management of schedules and budgets. Role overview Collaboration with project managers and stakeholders is central to this role. The Senior Project Controls Engineer manages forecasting and reporting, monitors project progress, and helps keep projects on track financially and against timelines. Analytical skills are used to spot potential risks and suggest practical solutions. What you will do Support project delivery by working closely with project managers and stakeholders Oversee project controls, including forecasting and regular reporting Track progress to help projects remain on schedule and within budget Analyze data to identify risks and recommend actions Requirements Background in project controls within the infrastructure sector Strong analytical abilities and clear communication skills Experience collaborating with teams and engaging with stakeholders

Location: London, UK - Hybrid (3 days in office)About the TeamThe Foundations team is responsible for developing the essential systems and tools that empower engineers at DoorDash and Deliveroo to create, deploy, and manage software efficiently at scale. We regard our infrastructure, CI/CD processes, and developer tools as products, crafted with the same level of precision and care as our customer-facing solutions. Our goal is to enhance engineering speed, reliability, and security as we revolutionize the global dining and shopping experience.About the RoleIn this role, you will work at the dynamic intersection of software engineering and cloud infrastructure. You will produce high-quality code to automate processes and develop internal tools while designing and managing scalable systems on AWS.This hands-on position focuses on optimizing the software development lifecycle, deployment, and operational practices throughout the organization — balancing coding, infrastructure design, and operational excellence.Your ResponsibilitiesDeveloping and maintaining software (primarily in Go) to automate infrastructure, streamline developer workflows, and enhance platform featuresDesigning, deploying, and operating secure, scalable systems within AWSCreating and maintaining CI/CD pipelines utilizing GitHub Actions, CircleCI, Buildkite, and other related toolsImplementing infrastructure as code and enhancing automation across various environmentsTroubleshooting and resolving sophisticated build, deployment, and production issues across application and infrastructure layersEnhancing observability, reliability, and performance of internal platforms and production systemsCollaborating with engineering teams to establish best practices for deployment, release management, and cloud architectureParticipating in technical design discussions and driving continuous improvements in DevOps methodologiesRequirementsExtensive experience in building and operating CI/CD systems using tools like GitHub Actions, CircleCI, or BuildkiteProficiency in writing and maintaining production-quality software in Go or equivalent languagesStrong background in cloud services, particularly AWSExperience with infrastructure as code tools such as Terraform or CloudFormationDemonstrated ability to troubleshoot complex issues across applications and infrastructureExcellent communication skills and a collaborative mindset

At Coram AI, we are revolutionizing video security in today's digital landscape. Our innovative cloud-native platform leverages cutting-edge computer vision and artificial intelligence to empower businesses with enhanced safety, informed decision-making, and rapid response capabilities. Experience real-time alerts, effortless clip sharing, and comprehensive visibility across multiple sites.Joining our dynamic, agile team means embracing clarity, excellence, and impactful contributions. Every team member has a voice, delivers significant work, and plays a vital role in shaping how AI can foster a safer and more interconnected world.In this role, you will be part of a pioneering team responsible for managing a sophisticated infrastructure that transcends conventional cloud setups. Beyond our robust AWS and Kubernetes configurations, we also oversee a vast array of IoT devices. We are in search of a skilled engineer who will play a crucial role in developing and maintaining our edge and cloud stack that supports our IoT product offerings, focusing on both infrastructure and the bespoke software we utilize.You will tackle intriguing challenges at the confluence of user experience, machine learning, and infrastructure, while committing to excellence, continuous learning, and delivering exceptional products in a fast-paced startup environment.

About Anaplan Anaplan builds AI-powered scenario planning and analysis tools that help businesses make smarter decisions. Over 2,400 organizations worldwide, including Fortune 50 leaders like Coca-Cola, LinkedIn, Adobe, LVMH, and Bayer, rely on Anaplan’s platform to stay competitive. Our teams share a strong commitment to client success and a culture that values innovation, diverse perspectives, and celebrating achievements at every level. We focus on strategic goals, value-driven work, and disciplined execution, creating space for growth, recognition, and connection. Role Overview: Principal Infrastructure Engineer Anaplan is hiring a Principal Infrastructure Engineer to lead the design and deployment of a multi-region HashiCorp Vault platform. This role serves as the Subject Matter Expert for secrets management and governance, supporting hundreds of engineers and global clients. This is a hybrid role based in London, with at least two days per week in the office. What You Will Do Architect, design, and implement a new multi-region HashiCorp Vault platform on public cloud infrastructure. Own the solution architecture, maintaining high-quality design documents and Architecture Decision Records (ADRs). Develop and test strategies to ensure platform resilience, including performance, Disaster Recovery (DR), and High Availability (HA). Act as the primary SME for Vault and modern secrets management, promoting best practices across the organization. Work closely with stakeholders, platform teams, and software engineers to integrate their services securely with the Vault ecosystem. Partner with Security to define and meet control requirements for the Vault platform, covering policy standards, privileged access, audit/evidence, and compliance needs. Lead regular security discussions and maintain a proactive security posture within the company.

Join Palantir Technologies as a Senior Backend Software Engineer focused on Infrastructure. In this crucial role, you will design and implement robust backend systems that power our cutting-edge software solutions. Collaborate with a talented team to develop scalable and efficient solutions that meet the needs of our clients.

Become a Force for Good with Axon.At Axon, we are committed to the mission of Protecting Life. We tackle society's most urgent safety and justice challenges through our innovative devices and cloud-based software. Our collaborative spirit drives our success as we engage with diverse perspectives from our customers, communities, and each other.Working at Axon is fast-paced, fulfilling, and engaging. You will have the opportunity to take ownership and enact real change while growing in a mission-driven environment where your contributions are valued.Your ImpactAs a Senior Software Engineer within the Infrastructure Services team at Dedrone, you will be tasked with designing, building, and enhancing the core systems that support our developer platform and critical backend services. Your robust software engineering skills coupled with extensive infrastructure knowledge will ensure our platform remains scalable, reliable, and secure. This role transcends traditional infrastructure operations; you will create production-ready backend services, design cloud-native systems, and manage the CI/CD and runtime environments that underpin our product ecosystem. Your influence will shape engineering standards, enhance developer experiences, and steer architectural decisions across Dedrone’s product teams.What You’ll DoWork Location: This position is situated in our London office following a hybrid work model. We emphasize in-person collaboration, requiring team members to be on-site from Tuesday to Friday, with the flexibility for remote work on Mondays, unless a workplace accommodation is in place. We believe that connection drives innovation, and our in-office culture is crafted to promote meaningful teamwork, mentorship, and collective success.Reports to: Engineering Manager, Infrastructure ServicesBackend & Platform Service EngineeringDesign, construct, and sustain production-grade backend services (primarily using Java, Go, or Python) that facilitate deployment orchestration, internal APIs, and developer platform functionalities.Contribute to architectural decisions encompassing service boundaries, API design, persistence layers, scalability strategies, and fault tolerance.Enhance performance, reliability, and maintainability of platform services through rigorous testing practices and meticulous system design.Manage and evolve shared services governed by the Infrastructure Services team.CI/CD & Developer PlatformOwn, design, and refine CI/CD systems that support Dedrone’s distributed product ecosystem.

Location: Hammersmith, London Department: ITAssala Energy is a forward-thinking Oil and Gas Exploration and Production company dedicated to the sustainable development of its valuable assets in Gabon. We embrace a collaborative culture, champion diversity, and prioritize safety and integrity in every aspect of our operations.We are seeking a Senior Network Engineer to become a vital member of our IT team, responsible for maintaining and enhancing our global network infrastructure. In this role, you will ensure network stability, security, and efficiency across our operations while spearheading improvements and innovative solutions.

Role OverviewJoin our dynamic Infrastructure Product Group team, comprising skilled DevOps Leads, engineers, team managers, and SecOps professionals. In this pivotal role, you will support and enhance our cloud infrastructure (AWS) while spearheading automation and optimization initiatives.Your responsibilities include implementing industry best practices for cloud network management, including VPC, subnets, ELB, NACL, NATs, and EIP. Additionally, you will oversee on-premise termination points and contribute to fostering an agile culture that empowers individuals, teams, and managers to maximize their effectiveness.

Palantir Technologies is seeking an Edge Infrastructure Engineer in London to help develop and refine infrastructure solutions. This position involves working closely with teams from different disciplines to support the integration and performance of Palantir’s systems. Role overview This role focuses on building and optimizing infrastructure that supports Palantir’s products at the edge. Collaboration with engineers and other specialists is central to ensuring systems work together smoothly and deliver reliable results. Key responsibilities Develop and improve infrastructure solutions for edge environments Work with cross-functional teams to integrate new technologies and features Monitor and enhance system performance and reliability Location This position is based in London, United Kingdom.